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Velocity8.8

Anthropic's conversational AI assistant; Claude.ai chat + Claude apps.

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Claude Duet opens a proactive-agent app to Pro and Max, the first move after the 5.5 rollout.

agentsproactive-aimodel-familydeveloper-platformpluginssubscriptions
◆Current state
Claude shipped all three 5.5 tiers between September 22 and October 7 and paired Haiku 5.5 with monthly API credits for Max and Team plans. On October 21 it opened Claude Duet, a separate app where Claude acts as a proactive agent, as a research preview for Pro and Max subscribers. Earlier work merged chat and Cowork into one surface and opened a plugin directory with developer tooling.
◆Where it's heading
With the model family complete, the product focus is moving from what Claude can answer to what it does unprompted. Duet extends the agent work that started with Cowork into a dedicated app that initiates, and gating it to paid tiers ties it to the same subscribers who just received API credits.
◆Prediction
Expect Duet to widen beyond the research preview, to Team or Enterprise plans or into the main app, and to connect with plugins from the directory. The entries do not yet signal the next model generation.

◆Recent moves

  1. 8d ago

    Claude Duet research preview: a proactive agent app for Pro and Max

    ⚡ SPARK

    Duet is the first post-5.5 release and moves Claude from a chat surface that answers to an app where it acts on its own initiative. It builds on the Cowork merge and lands with the paid tiers that just got API credits.

  2. 22d ago

    Claude Haiku 5.5 launches; Max and Team plans get monthly API credits

    ⚡ SPARK

    Haiku 5.5 closes out the 5.5 family fifteen days after Opus 5.5, giving every tier a new-generation model. The API credits bundled into Max and Team plans are the bigger structural change: the chat subscription now funds use of the developer platform.

  3. 1mo ago

    September 28, 2026

    ⚡ SPARK

    Sonnet 5.5 was the middle step of the 5.5 rollout, arriving six days after Opus and nine days before Haiku. It made the release a tiered family, not a single flagship.

  4. 1mo ago

    September 25, 2026

    ⚡ SPARK

    The plugin developer portal is the supply side of the platform push that the October API credits now feed with builders. It gives third parties a review path and usage analytics inside Claude's own directory.

  5. 1mo ago

    September 22, 2026

    ⚡ SPARK

    Opus 5.5 opened the 5.5 family by matching Fable 5.1 on most work at 40% below Opus 5's cost. It set the price-down pattern that Sonnet and Haiku 5.5 then extended.

  6. 1mo ago

    September 16, 2026

    ⚡ SPARK

    Folding Cowork, Design, Slides and Docs into every conversation turned the app into one work surface, not a set of modes. It is the product-side counterpart to the model releases that followed.